Staple driving device



Oct. 12, 1943.i I l SCHECKWITZ v v 2,331,509

STAPL DRIVING DEVICE Filed Aug. 2l, 1941 3 Sheets-Sheet l Oct. 12, 1.943. l. s'cHEcKwl'rz STAPLE DRIVING DEVICE 3 Slheeis-Sheet 2 Filed Aug. 2l, 1941 zR. Kw m CN f1 N. w m 5 2 m @M o Oct. 12, 1943. L. scHEcKwlTz 2,331,509

` sTAPLE DRIVING DEVICE Filed Aug. 21, 1941 5 Sheets-Sheet 3 y BY rgb INYENTO@ ATTORNEYS.

Patented Oct. 12, 1943 UNITED STATES PATENT OFFICE j STABLE DRIVING lDEVICE f Louis Scheckwitz, Long BeachQN. Y. applicati@ August 21, 1911, serialV m1401755 f i (C11-49) f Y 3 Claims.

This invention relates to new and useful improvements in hand tools, and in its present embodiment, it is illustrated in a tool employed by furriers for securing skins in stretched form to a stretching board.

In this art, it is common practice to secure skins in stretched form, together with a pattern, toa board or similar support by means of staples.A

This operation is generally accomplished by a combination tool of the' pliers type, which is engaged with the skin, the skin being then stretched and a small staple Visthen anchored in the board passing through the skin and pattern to secure them to said board. l

After the skin becomes set, it is the customary practice to remove the skin and pattern from the board by grasping them, and together giving them a quick jerk to dislodge the staples from the board.

This practice has disadvantages, mainly in that while the fastening means or staples are' readily enough dislodged from the board, they do not readily disengage the skin and pattern. VWhen this results, it necessitates the independent,V removal of the staples from the skins or patterns or both.

Furthermore, thisy action sometimes results in a rupture of the skin, which is, of course, undesirable since such ruptures often result in suicient damage to render the skin useless.

'I'he present invention contemplates the provision of means for removing the staples from their anchorage in the board and from the skin and pattern as well without damage to either.

A feature of the invention resides in a combination tool of the type before mentioned, which will lay a rip thread beneath the heads of the staples as they are driven to set position bythe stapling mechanism, the rip thread being secured to the board together with skin or a skin and pattern by the staples in such a manner that merely by pulling the same, the staple will be completely detached or removed withrespect to the board and the skin and pattern.

A feature of the invention resides in the use of a novel formof staple, which, owing to its construction, insures theremoval of the staples by means of the rip thread.

A further feature of the invention resides in a novel construction and arrangement of parts in combination with the staple structure, whereby leftto rightor from right to left along the edge of the skin,A and that in either case, therrip thread will always occupy a position `between the legs of the staple and beneath the'head thereof.

It is an object ofthe inventionV so to construct the tool that it will be substantially similar in use to tools of the described type already employed for the purpose, thus rendering it unnecessary for operators to familiarize themselves with a new 4use and method of operationv In the accompanying drawings, I have illustrated the invention as embodied in a furriers tool as heretofore mentioned. It is to-be under.- stood, however, thatthe invention is not limited to` use inconne'ction with suchtools, and that it maybe 'embodiedin any type of'stapling device in which a plurality of staples are set in spaced relation to 'one :another and which are subsequently to be removed.

stapling'device employed by window dressers, in which operation a tape or' ribbon is employed,

lieu thereof. y

: Reference will now'be had to the accompanyl ing drawings, wherein` a tool constructed in accordance with vthe'present invention'is illus- `trated,'and'in which, v

Figure 1 is a view in side elevation of a tool constructed in accordance with the present invention; e f y Figure 2 is' a top plan vview thereof.`

Figure 3`is an inverted or bottom view thereof.

Figure 4 'is a longitudinal vertical sectional view on `an enlarged scale taken substantially on the line 4-4 of Figure 2; y i l Figure 5 is a view in side-elevati'on-*with certain of the parts lin different positionsl than that in which they areillustrated in Figure 1.

vFigure Gis a' view in front 'elevation of the device.' e y t Figure 7 is a vertical sectionalv view taken subr-stantially on" thefline 1-1 of Figure 1.

Figure 8 is a vertical sectional view taken substantially on the liney 8--8 of Figure 1.

Figure 9 is -a detailed-horizontalV sectional view '-taken substantially on the line 9-9 of Fig- 'ure5.

Figure 10 isa vertical sectional view taken substantially on theline l-lof Figure 1.

Figure ll is a perspective View of the rip thread guiding Amember. f

One example 'of such alternateuse would be ak Figure 12 is a. detailed perspective view illustrating one form of staple employed.

Figure 13 is a schematic view illustrating the manner in which the rip thread is laid beneath the heads of the staples when the device is operated in a. direction from left to right, and;

Figure 14 is a. schematic view showing the manner in which the rip thread is laid beneath the heads of the staples when the device is moved in a direction from 1right to left.

A device `constructed 'in accordance with the present invention includes a body portion I5, a staple setting mechanism I6, which includes a manually operated staple setting plunger I1, having a head I8 and a gripping jaw -|9, whichis pivotally mounted as at upon the bodyporftion. There is also a pivoted hand grip 2l, which is also pivotally mounted as atJL'l luponthe .body portion l5.

By reference to Figure 4, it will be noted that f the body portion .15 .consists .of .an Ielongated, invented channel Ishaped .member iormedmf :sheet metal. :invented .channel member iis .designated -.l..2,.and -aby lrefieren;ce@toForum 1.1.0. it `will .bemiedrthat the rsidemallslthereof are offset as -1 at R3. the purpose fof Ywhich .will latorfbe apparaat. l

Frhenefenenoe numerahhdesignates side plates wbichre :positioned v.against Athe .outer giace of the Oiset portions .of ;the..channe1 -member Vmrd the impar edge .of .each .of lthese @lates 24 .is .formed with :an inwardlordisposed .flange 26.

illibsoorlstnltion provides. a. .guide channel :21 1199.11 @sgh sidofof fthe .channel ,member above which .channels has a right :angular .upper .por- @911:38 :beneath .the inwardly .turnedA flanges .-26 QPOQEC .fmQiXiQDed .side .plates a2! .fare secured to the offset portions #5 .of (the channel :mgmbgr 'by moans fof sa transversely .extending siret whichfhasfgnd portions 226'., .vmichore t9 forl-flame rivetrhgads..

:This @Qilstruoiion movidos :a sfgding 1channel 'for fastening elements. `svhiornin .the present instance are sthe form of :Stallion `:Means is @Bates 2in Jn filfill 35, asbest shown rin Figurent. {I'hefonvvard portion. of the I follower .slides `beneath the forwsrdyportiongllfwmch .is an ,integral part of the plates 1j .carried by. the channel mombergbenegth the .end Wall :3.6, and .said followerhaS-anlae 3.8. ihefiorrward portion .39 .of which @riesgos :the .ond-wall 51.6 .cfs-,he .slot

to limit iforvvax-iclInovenient .of the follower.

The pivotal points 2li of the gripping jaw t5 and .the hand grin# ...are -rforfmedfby screws 4u,r

there beingfone qf,these screpvs f thneadedfineach of the `Side .platos -.33 'of the .istapling mechanism. see Figure 1 0 Aof fthe ipdriatvvikngs.

-By .this construction., the .grinning .Jaw and .the hand grip .are capablerOf-indgngodoot pivotal movement relative to the body member E5 :and relative to eachrother.

The .stapling meghmism .l5 iS-.Seuredfto the .forward .end of .thebody :member i5.. bwmeans oit rivets or the like 4|.

AS the Staples lare .fed i through the feed channel 2l, they will be presented singly to the staple setting plunger 42 of the stapling mechanism.

The hand grip 2| consists of a sheet metal housing 44, having an openY portion 45 through which lthe iingers of the hand may be passed. The rear end of this hand grip is provided with a hinged cover 48, pivotally mounted as at 41 for movement to either open or closed position as illustrated in Figure 1. This .cover A3, together With the side walls of the hand grip, provides a housing 48 for a spool 49 of thread, the thread being designated 50, which thread 50 is the thread heretofore referred to as the rip thread. The .spool 4.9 `is retained in position in the housing bymeans of two projections formed by indenting the side Walls of the hand grip, see Figure 7, .theseproiections .extending into the ends of the passage through the spool.

' *Means is provided for adjusting the tension uson ith@ 5.1190149 and thereby *controlli-ng ,the llatefgfspeed .at--.w1.1.i..oh .thefthrgad unwind@ therefrom, gadthis means will ber-@after .bedesglibed AS fberetoigrestated, the Vgr member@ is of inverted channel form and itisW-ithip this .-body .membgr that-,tbe thread guide which guides the .esd- Lrqmhe ...Spool r4.9 at the rear .of ith@ tool :to te staple I-settiz-ig vvposition :at the forward Vend thereof., .is carried.-

512M-thread guiding .means is .illustrated .in .de-

tal in .lgure f1.1, and fit comprises ya relatively narrow elongated :body portion '50, the .forward iportiongof nwhigbs .tapgrsdgsnt ,16.1. nt its forward extremity, the taper/ edpgutiond is tor-med with 1.a 5195.6 portion .-6.2- whigh :hasn thread pas gage therethrough.

:Intermediair of .its .ends the body portion -iS :omringd :with .thread :guides 6.3, which imayrbe l formed by slitting the body transversely :and rolling :that Vportion thsroof .which :lies lbetween fthe slits .as .illustrated in said Figure 1i.

l lThe rear endof the body portion `iil is abent ".5..4`,.&Qh .0f .which is formed With .a .spring :finger 65, each of which has .a notch or recess di? upon .its inneria.

As illustratedeinligurea, the notches 66 engage projections lupon ;the inner `vvalls Jof .the channellike'body member yto .retain the thread guide in position, :theprojections :beingformed by indentationlstil formed inrthe outer faces ofthe side walls of the finverted channel .member `22.

fngiEigureS, there is also shown the means for )holding gtheliand .grip '2 l `.immovable with respect :to the lbody member '.22 when the Idevice is `in :and :its functions will .novv` be described.

Referring to 'Figure L8, the reference characters :Q8 andll'fdesig'nate ithe side walls of the housinggM of rthehand grip 32.1. The side Wall=68 'has an-opening-'TD:therethrough for the reception y will be retained in .posit-ion, and the side Walls` of the housing 44 will be contracted to exert more or less pressure upon the ends of the spool 49 to produce proper Ytension upon the thread.

the nose portion 62 of the thread guide, the forward end of which rests upon the'lower wall 'l5 of the passage .15, the forward portion of which is Ycut away as at 1l. The rear portion of the upper wall of the passage l5 is enlarged as at T8, the purpose of which will now be described.

By reference to Figures 4 and 8, it will be apparent that after the bolt has been removed, the thread guide may be moved rearwardly of the body portion 22 in a straight line until the downwardly curved nose 62 thereof engages the forward edge '19 of the bottom wall of the passage 15. In this position, the rear end of the thread guide may be rocked downwardly by reason of the enlarged portion 'i8 of the upper wall of the passage l5, thus permitting the removal of the thread guide when it becomes necessary to thread a new thread therethrough.

The staple which is employed in connection with the present device is of novel construction and is illustrated in Figure 12.

This staple comprises two leg members 80 and 8|. The leg members 80 and 8| are connected by a head member 82 which head member includes two angularly disposed arms 83 and 84 respectively to the legs 80 and 8|.

By this construction, the head 82 of the staples is projected forwardly of the legs to a position out of alinement therewith and preferably in a plane at right angles to the longitudinal axis of said legs as best illustrated in Figures 12 and 13. l

While I have illustrated this staple as comprising but two angularly disposed and connected arms, it may consist of a single member vof arcuate form, or the whole head member 82 could be of semi-hexagonal shape or of anyl shape, as a matter of fact, which would throw the head forwardly or rearwardly out of alinement with the legs.

This construction of staple I consider important since it permits of laying the rip thread beneath the staple in all positions of operation of the tool.

For example, in stapling skins patterns to a stretching board, the skin and pattern is gripped by the tool with the tool in a position at substantially right angles to the edge of the skin and just behind the connecting point of the two arms 83 and 84 which form the head `of the staple. f 1

If now the tool as shown in Figure 3 be moved in a direction downwardly'of the sheet, the' rip.

thread will be laid over the lower arm and under the upper arm of the head of thel staple in said ligure. Such operation is equivalent to the movement of the tool from a fixed point towards the right, as illustrated in Figure 13 of the drawings. If, on the 'other hand, the tool be moved in an upward direction in Figure 3, the rip thread will be laid beneath the lower arm of the head of the staple and over the upper arm 'of the staple in said fleure. Such operation is construction of the head of the staple, the rip k thread is at all times positioned beneathl the head and between the legs of the staple.

As best illustrated in Figure 9, the side plates 33 of the stapling mechanism I6 have their forward vertical edges bent inwardly as at 90, and the staple setting plunger which is designated 9|, is substantially V-shaped in cross section as of access to the staples and staple setting plunger to permit of removal of a damaged staple which might clog or otherwise hinder the operation of the stapling mechanism.

The space 82 is normally closed by means of a vertically sliding plate 93, which is retained v in its closing position by a bolt or screw 94 operand pattern. If the staple were of the conventional form, there would be no assurance that the rip thread would be positioned beneath the head and between the legs of the staple.

By forming the head of the staple in such a manner that it is projected forwardly of the legs thereof, it permits of laying the rip thread at a point in advance of the legs of the staple ,and thus insures the laying of the thread between the said legs and beneath the head of the staple in either a right vor left hand dire-ction of movement of operation of the tool.

By reference to Figure 3 of the drawings, it will be apparent that the rip thread is delivered at a point forwardly of the legs of the staple ating in a slot in the plate 93, see Figure l.

The plate S3 has a thread cutting and holding finger 96 upon its upper edge behind which the thread may be passed to sever the same or behind which the free end 0f the thread may be held when the tool is not in use.

In operation, the rip thread is fed from the spool merely by movement of the tool from one operative position to another, the thread being held by the last driven staple during such movement of the tool.

When it is desired to remove a skin, or a skin and pattern from a stretching board to which it has been secured in the manner hereinbefore described, it is only necessary to grasp one end of the rip thread and exert a pull thereon. This action will not only remove the staples from their anchorage in the stretching board, but will insure their complete removal from the skin and pattern and render unnecessary individual removal of any of the staples from the skin or patg the :base member and mverlying the .same.,a ,rip [thread marrying Qhamber -carried by the hand grip, means for guiding a rip thread from the arip ithread chamber to the staplng mechanism, :and means atfthe staple -driving mechanism for ,positioning 'the :rip @thread between the legs 'of the ,staple prior 1to the settingof the-staple [by the `staple drivingfmechansm.

,2. In -a :staple driving device in combination, a `holiowrmain body .memberfa staple-driving mechzanism, :means for nfeeding a plurality ,of 'staples to said `stap]ezdrfvfrlg mechanism, mean fOI -SUP :porting a. rip -thread upon 'the :body member, and means for guiding said :nip thread lfrom -its :sup-

-ple driving locationfof thedevicesaidirip thread .guidingsmeansfcomprising az-rgidelongated mem l.ber .removably carried within the ,hollow body member.

3. In .a staple driving Ydevice in combination, a hollow .main body .-member, 4a staple driving mechanism, .means for feedingia plurality ,of staples zto Ysaid staple driving mechanism, means for supporting-a rip thread upon .the -body member, and 1means for guiding said rip thread from its support through the hollow body member to the stapledriving location of the devieesaidrip thread guiding means co-mprjsinga rigid relon- ,gated member extending throughout vthe length lof .the hollow body member and insertable `endwise .into `said hollow 'body member, and means for :removably mounting said rip threadguiding means withinsaidhollow.body member.

LOUIS SCHECKWITZ. 

